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Mechanical Properties of Bentonite-Sand Mixtures Under Triaxial Stress Condition

Published online by Cambridge University Press:  15 February 2011

M. Umedera ,
A. Fujiwara ,
N. Yasufuku ,
M. Hyodo  and
H. Murata
M. Umedera
Affiliation:
Sumitomo Metal Mining Co., Ltd., 2–16–9, Kabukicho, Shinjuku-ku, Tokyo 160, Japan
A. Fujiwara
Affiliation:
Radioactive Waste Management Center, 2–8–10, Toranomon, Minato-ku, Tokyo 105, Japan
N. Yasufuku
Affiliation:
Yamaguchi University, Tokiwadai, Ube-shi, Yamaguchi 755, Japan
M. Hyodo
Affiliation:
Yamaguchi University, Tokiwadai, Ube-shi, Yamaguchi 755, Japan
H. Murata
Affiliation:
Yamaguchi University, Tokiwadai, Ube-shi, Yamaguchi 755, Japan
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Abstract

A series of triaxial compression tests is being conducted under the drained condition on bentonite and sand mixtures, known as buffer, in saturated and optimum water content states to clarify the mechanical properties of the buffer.

It was found that the mechanical properties of bentonite and sand mixtures are strongly influenced by water and bentonite contents: shear strength in a saturated state is less than that in an optimum water content state; shear strength decreases rapidly with increasing bentonite content. Strength properties are much dependent on confining pressure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 307
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1. Fujiwara, A., Tashiro, S., Ikari, S and Suzuki, A. in Studies on an Advanced Repository System with Enhanced Engineered Barriers (A Framework). The 1993 International Conference on Nuclear Waste Management and Environmental Remediation, pp.113–118, (1993).Google Scholar
2. Ito, M., Suzuki, K., Danhara, T., Watanabe, T., Shibata, M. and Sasaki, Y. in Quantitative Evaluation of Minerals in Bentonite, 37th Clay Society Conference., pp.15–16, (1993) (in Japanese).Google Scholar